EMILE/libiso9660/iso9660_lseek.c
Laurent Vivier 9bd9755dbb Update email address
Signed-off-by: Laurent Vivier <Laurent@Vivier.EU>
2013-09-05 14:45:27 +02:00

39 lines
592 B
C

/*
*
* (c) 2005 Laurent Vivier <Laurent@Vivier.EU>
*
*/
#include <stdio.h>
#include "libiso9660.h"
#include "iso9660.h"
int iso9660_lseek(stream_FILE *_file, long offset, int whence)
{
iso9660_FILE *file = (iso9660_FILE*)_file;
long new_offset;
switch(whence)
{
case SEEK_SET:
new_offset = offset;
break;
case SEEK_CUR:
new_offset = file->offset + offset;
break;
case SEEK_END:
new_offset = file->size + offset;
break;
default:
return -1;
}
if ( (new_offset < 0) || (new_offset > file->size) )
return -1;
file->offset = new_offset;
return new_offset;
}